All mission maps
Create a new profile, name it "VENGAR", and start
a new game. A message will appear to confirm correct code entry.
All of the missions in the game will be unlocked and available
at the start.

Stronger characters
Create a new profile, name it "MATTSOELL", and
start a new game. A message will appear to confirm correct code
entry. When playing under this file, Tex and Brutus can take more
than three direct shots of the rocket launcher without being near
death. Note: "MATTSOELL" is the project director for
Bungie who made Halo. Note: You must watch the full ending
once, have all the DNA canisters, and at least one open campaign
file for this code to activate.

All characters
Create a new profile, name it "GARNER", and start
a new game. A message will appear to confirm correct code entry.
All single and multi-player mode characters will be unlocked.

Brutus' special changes
Create a new profile, name it "GARNERVEN", and
start a new game. A message will appear to confirm correct code
entry. Brutus' special meter will last longer, and attacks be
more powerful. Note: You must watch the full ending once, have
all the DNA canisters, and at least one open campaign file for
this code to activate.

Brutus' appearance changes
Create a new profile, name it "GARVEN", and start
a new game. A message will appear to confirm correct code entry.
Brutus' character will look completely different, and he is several
times as powerful as before. Note: You must watch the full ending
once, have all the DNA canisters, and at least one open campaign
file for this code to activate.

Rapid fire weapons
Create a new profile, name it "RAPIDFIRE", and
start a new game. A message will appear to confirm correct code
entry. All weapons, even the shotgun, will fire at a higher rate
of speed. Note: Ammunition is eaten up much faster. Note: You
must watch the full ending once, have all the DNA canisters, and
at least one open campaign file for this code to activate.

Dumber enemies
Create a new profile, name it "SPRAGNT", and start
a new game. A message will appear to confirm correct code entry.
Even under the Brutal difficulty setting, enemies will miss you
more often, act stupid, and your squad will be more intelligent
and shoot and kill enemies with no instructions. Note: You must
watch the full ending once, have all the DNA canisters, and at
least one open campaign file for this code to activate.

Better aim
Create a new profile, name it "DEADAIM", and start
a new game. A message will appear to confirm correct code entry.
You will notice your teammates aim and hit things much more often.
Flint's special meter will decrease slower, and she will drop
enemies quickly. Note: You must watch the full ending once, have
all the DNA canisters, and at least one open campaign file for
this code to activate.

Higher defense
Create a new profile, name it "ERINROBERTS", and
start a new game. A message will appear to confirm correct code
entry. This somewhat increases your squad's defense in damage
taken. They will not get hurt as often, but also seem to dodge
projectiles. Note: You must watch the full ending once, have all
the DNA canisters, and at least one open campaign file for this
code to activate.

Quicker death
Create a new profile, name it "DBLDAY", and start
a new game. A message will appear to confirm correct code entry.
Everyone will be easier to kill; your squad may also die much
faster. Note: You must watch the full ending once, have all the
DNA canisters, and at least one open campaign file for this code
to activate.

Cartoon mode
Create a new profile, name it "HVYMTL", and start
a new game. A message will appear to confirm correct code entry.
During the game, everything looks like a cartoon, with coloring
book-style models, blood resembling paint, lava with a paper feel,
and different level layouts. Note: Note: You must watch the full
ending once, have all the DNA canisters, and at least one open
campaign file for this code to activate.

Tougher game
Create a new profile, name it "BRUTAL", and start
a new game. A message will appear to confirm correct code entry.
This code completely beefs up the enemy AI and seems to change
their behaviors. Even under the Standard difficulty setting they
will ambush you, find a way to hunt you, and come flailing out
in order to kill you. They will take the same amount of hits,
but be much harder to put down, thus making the entire game harder.
They drag themselves away when wounded, similarly to the original
previews of the game or when you fight the Halo aliens
under the Legendary difficulty setting. Note: You must watch the
full ending once, have all the DNA canisters, and at least one
open campaign file for this code to activate.

Bots in multi-player
Start a game of Squad Deathmatch. Plug in controller
two and set the A.I to "Fire At Will". Go around and
pick them up some good weapons and medkits, then disconnect the
controller. Your squad will now be facing three heavy thinking
bots in multiplayer mode.

Bonus multi-player characters
Get the hidden DNA containers to unlock various characters
in multi-player mode.

Keep items
If you lose your life in single player mode, join the
game using controllers two, three, and four to get them back.

Maximum MK ASLT ammunition
When you find a duplicate MK ASLT, keep picking it
up. It will raise your maximum ammunition to 600.

Regain special faster
When your special gets low or runs out, find a place
to hide then click the Left Analog-stick to duck or squat.
Your special will increase three times faster when compared to
if you were standing.

Respawning teammates
When one of your teammates die, you can respawn them
instantly by simply plugging in another controller, hitting [Start],
choosing the desired character, then quitting with that person.
This will make your character under A.I. control, allowing him
to keep fighting.

Defeating the final Boss
Use Hawk to go to the farthest yellow map marker and
take everything out (enemies, turrets, and force field). Activate
the console. After the door opens go to the room with the turret
and destroy it. Activate the console then go out and through the
door that opened. This will lead you to the second yellow dot,
but stay out of the Boss' line of sight. Take Brutus up to where
the farthest yellow dot is located. Use Vengar or you will probably
get killed. Use Tex as desired, as he is not essential for this
battle. Finally, use Flint to snipe the Boss, who should be distracted
by Brutus who just ran to the opposite end of the map. Shoot him
in the back until he warps to the place where he powers up (where
the Blue Power Orb was located before it was destroyed). Take
Hawk to the command console and activate it (the closer yellow
map dot).

The Anvil: Hunter Lord's DNA
Send Hawk in invisible mode to avoid getting hurt.
Go to the far right side in the beginning. There is a small ledge.
Climb it until you reach a fork in the road. Go to the one with
fog to the right. Keep going and stay low. At the dead end, you
will see a high cliff that drops off into a pit of acid. There
will be a tube hanging out. Very carefully climb out on it until
you see a tiny ledge off to the right side. Jump on it and climb
to the top. There will be a flat piece of land, and the DNA will
be up there.

Before doing anything, send someone like Hawk to distract him.
When starting, go to the right and there will be a small ledge.
Climb it until you see a split in the path. Take the one with
the fog on it. Then, go to where you can see the recharging station.
There is a short pipe at the end of the trail. Go on it, but be
careful not to fall off the left side. Then, jump onto a small
ramp on the right side. Next, go to the top of the ramp to find
the DNA.

Cemetery Gates: Feral Outcast's DNA
Just before you enter the foggy part and need Brutus,
there should be a tower on the left side. To reach it, kill the
mutant. Go inside the tower and you will find Feral Outcast's
DNA.

Cemetery Gates: Early Sweeper V
At the beginning when the Captain says "Don't
shoot the barrels...", shoot the giant barrel to the northeast.
This will kill most of the mutants. Then, go to the giant station.
Go up the stairs and kill the mutant. The Sweeper V is in fornt
of the yellow thing, with 8 shots. You will find ammunition with
brutus' Venger later in the level.

Cemetery Gates: Hidden mini-gun
After you see the bones, kill the mutants. Do not turn;
just go straight. You should go into a hole. There will be ammunition
for the gun; or if you ran out of ammunition throw the gun away.
There is a fresh one with full ammunition.

Kill Shadoon: Defeating Shadoon
Before doing this, do not take out the Wall Of Souls
in the last chapter in the mission. Leave this up so that Shadoon
can not go after you. After deafeating Shadoon in the temple room,
have everyone set to cover the character that you are controlling.
Warp out to the main cavern. As soon as you are warped out, run
to the tunnel to the right (that lets you get past the Wall Of
Souls that is still up). Once in the tunnel, quickly tell all
your squad member to run to the tunnel using the Move To feature.
Keep running until you are at the top of the tunnel. Then, once
again tell all your squad to move to the top of the tunnel. Place
Tex and Brutus on each side of the tunnel entrance, just slightly
into the tunnel. Put Hawk and Flint at the entrance of the tunnel.
Have Flint out enough to where she can see the hut near where
the squad warped out. Shadoon and the Fire Hounds will come up
the tunnel. This will make it very easy to ambush them. Shadoon
does not warp away as quickly when grenades are thrown at him.

Kill Shadoon: Shadoon's DNA
To get the DNA of Shadoon, walk over his body after
you kill him.

Hostile Reception: Explore asteroid
When leaving the last tunnel and returning to the outside,
notice the turret located on the tunnel you just exited. Face
the tunnel and walk to the right side of it. Follow the rocks
to where the rock wall meets up with the tunnel's outer surface.
You will fall through a small gap in the asteroid. It may appear
you are stuck; just "wiggle" slightly. From here, you
can walk around the asteroid and revisit some tunnels.

Shantytown: Pipe ambush
This is an ambush secret in the Deathmatch level Shantytown.
When you get to the bridge, look over to your left to see a lot
of ruins and sheds. Walk along the left wall to the fallen tower
building. Take your character through the hole on the far right-hand
side. With a few jumps, you can get someone like Flint to the
right-hand side of the pillar. Behind here is a group of pipes.
Go towards them and jump on the rock to get all the way inside
the top pipe. Leave Flint or a Fire Hound here. When the squad
comes up the bridge, you can let your other teammates stand their
ground and pick them off with ease from inside the pipe. Your
human or CPU opponents will not catch on until it is too late.

Shrike Rogue: Shtrike Hound's DNA
Go to the temple which has the alien technology. After
you get the alien thing, go to the top of the temple. Walk around
the top part of it. You should find a broken down wall. Jump inside
of it. When you land on the ground, you should find Shrike Hound's
DNA.

Dog ambush
Notice that the hounds can take a lot more damage when
in the lava or toxic pools. There is a good reason for this. If
you stock up on a few medkits and let the hounds stay under the
hazard, they can hide there when the squad runs out. They can
then leap out of it like fishes and ambush them before going under
to hide again. This is a great tactic for the Abaddon and Shantytown
levels.

Soda cans
In some levels, such as Seti 2049 you can find soda
pop cans lining the tables where the guards man the outposts.
If you Hawk over there and shoot them with a pistol, they will
start running around wondering where the noise is coming from.
If you are Hawk, keep her cloaked and plant a group of Sentry
Bombs in the same area that the guards usually patrol. Shoot the
soda cans then run and hide. No more than a second later, you
should hear all of them explode after accidentally trampling on
the mines while looking for you.

Brutus
For all enemies except the last Boss, use Brutus to
charge the enemy. He only losses his Vengar when the enemy is
dead. You can charge them and damage them multiple times, which
is very effective.

Use Brutus' specialty to find snipers before they find you. Just
flick it on and off.

When playing as Brutus and you run out of medkits, use Venger
in a corner with no enemies nearby. When you run out, crouch.
Your special will regenerate faster. Repeat this until your health
is full.

Flint
If one of your characters dies, notice that they have
red blood surrounding them. However, whenever Flint dies, there
will not be any blood, only a black spot from the gun debris and
ash. She will not have any blood because she is a robot or a sentry,
as she mentioned earlier in the game. A good way to see this is
to go directly to squad fight. Do a Brute Force against another
Brute Force team. Have one of the team's Flint sniper all of its
teammate's characters except for one. To save time, aim for the
head. Then, have the other character who you left standing shoot
Flint and kill her. If you keep shooting her body while its on
the ground, it will not bleed.

Flint: Quick spotting
When you enter a large area, flick the special on and
off to quickly see if there are any moving targets. If there are
moving targets, zoom in and kill them.

Hawk
If you do not have anyone you can play with and you
are forced to do this yourself, you can have a relatively easier
time (and save ammunition) by simply using Hawk (the Assassin)
to kill one or two enemies while cloaked. Then, retreat to regenerate
energy. Repeat this until you need the really heavy firepower
of your AI companions.

While playing as Hawk, select your PowerBlade "PwrBld"
in your inventory. Use her specialty (cloaking) and stab as many
enemies as you can. One stab in an enemy kills them, and since
Hawk runs very fast, you can take out many enemies without taking
any damage.

Hawk is a very good character, but you have to use her correctly.
When Hawk is in stealth mode and shoots, her special decreases
a lot faster. If you kill about three aliens this way, she will
have no stealth remaining, and she will be nearly helpless as
she has very little health and special. The proper way to use
her is to scout. Put Tex, Brutus, and Flint in stand by mode so
they do not follow, then scout an area in stealth mode. You can
also try stealing ammunition. Then, run back to Brutus, Tex, and
Flint. The stealth mode lasts a short period of time. When you
use it, be very quick as she is valuable.

When Hawk is invisible, you can sneak up behind enemies, turn
off invisibility, then kill them. Turn her invisibility back on
quickly. You must do this when there are no enemies around or
if none of them are looking.

Tex
When you select a character, notice that some of them
have larger health and special meters. When you select a difficult
level, unless you charge up Hawk's stealth meter, you should choose
Tex. He has the largest health/special meters.

Enable the "Rapid fire" code and get two miniguns. Take
out both guns and Tex will be almost invincible.

Getting rid of mines
If you are behind four mines and do not want to shoot
or disarm all of them, throw a grenade in the middle and they
will all explode.

General tips
Make sure to tell the other characters to support you
when attacking a frag.

When in combat, tell your teammates to fire at will, move around
a lot, and throw grenades when there are a lot of aliens grouped
together.

Always pair one guy with one girl when playing regularly.

To clear out a lot of enemies, have Tex and Brutus go in and do
as much damage as possible. Then, retreat back to Flint and Hawk.
Also have Flint give you sniper support and have Hawk cover Flint.
It also helps to send Hawk in invisible to scout and kill as much
as possible.

When going into any hallway or cave, keep Flint back, but able
to snipe clearly into the hall or cave. Put Brutus on one side
and Tex on the other outside of the hallway. Have Hawk explore,
and if needed lead the enemies out. They will be blown away from
front, left, and right and from Hawk.

Glitch: Dead character's speak
On some missions, dead members will talk. For example,
on Chapter 2 of The Anvil, Tex talks about the dead man on the
spike. However, if Tex is dead, you will still hear his voice.